Red Sox notebook: Casas ruffled feathers with pregame routine, learned valuable lesson in process
One Foot Tsunami: Barvd
MassMutual is first jersey patch sponsor of the Red Sox
Boston Red Sox sign BetMGM as first betting sponsor
Brooklyn Digest: July 2023
MLB's Red Sox land MassMutual as jersey patch sponsor - Sportcal
Colorful jerseys here to stay: Red Sox president says team not planning future uniform changes, Sports
Red Sox to sport MassMutual logo under new partnership - Boston Business Journal
MassMutual lands deal for patch on Red Sox uniforms; Springfield company's deal with $17M yearly (report)
The Magazine Insurance Advocate
Sustainability and Inclusion MassMutual 2022 Annual Report
John Hancock ending long-held Boston Red Sox sponsorship